Pith Number

pith:KIS2I2XR

pith:2018:KIS2I2XRCZSSCYCMIWAL7QSLPX

not attested not anchored not stored refs pending

Unbiased LambdaMART: An Unbiased Pairwise Learning-to-Rank Algorithm

Hang Li, Qu Peng, Yang Wang, Ziniu Hu

arxiv:1809.05818 v2 · 2018-09-16 · cs.IR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KIS2I2XRCZSSCYCMIWAL7QSLPX}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:52:33.810035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5225a46af1166521604c4580bfc24b7df20e155c9cc5bf932b51a326de7415a2

Aliases

arxiv: 1809.05818 · arxiv_version: 1809.05818v2 · doi: 10.48550/arxiv.1809.05818 · pith_short_12: KIS2I2XRCZSS · pith_short_16: KIS2I2XRCZSSCYCM · pith_short_8: KIS2I2XR

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/KIS2I2XRCZSSCYCMIWAL7QSLPX \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 5225a46af1166521604c4580bfc24b7df20e155c9cc5bf932b51a326de7415a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0939c6f65135f34f2763cfb2aa8efe1c3ac33f22687798bff73a6dfbf2ab06a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2018-09-16T05:30:43Z",
    "title_canon_sha256": "2933c8d864fbc16be4841ec2da7c3b2762401ff29601cbb7a86a7f53342f538d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05818",
    "kind": "arxiv",
    "version": 2
  }
}